## `format_generated_files`
Format generated files. A file is considered generated
-if any of the first five lines contains `@generated` marker.
+if any of the first five lines contain a `@generated` comment marker.
+By default, generated files are reformatted, i. e. `@generated` marker is ignored.
+This option is currently ignored for stdin (`@generated` in stdin is ignored.)
-- **Default value**: `false`
+- **Default value**: `true`
- **Possible values**: `true`, `false`
- **Stable**: No (tracking issue: [#5080](https://github.com/rust-lang/rustfmt/issues/5080))